Method of forming grooved metal rods



(Mmel) W. AfMoCooL.

METHOD 0F FoRMING GRoovEn METAL Rous.

No. 328,797. Patented 001;. 20, 1885.

WI TJV ESSES UNITED STATES PATENT FEICE.

WILLIAM A. MCCOOL, OF PERRYVILLE, ASSIGNOR OF ONE-HALF TO PAUL OLIVER,OF ASHLAND COUNTY, OHIO.

METHOD OF FORMING GROOVED METAL RODS.

SPECIFICATION forming part of Letters Patent N0.328,797, dated October20, 1885.

Application filed February 10, 1885. Serial No. 155,520. (No model.)

To all whom t may concern,.-

Beit known that I, WILLIAM A. MoCooL, of Perryville, in the county ofAshland and State of Ohio, have invented certain new and usefulImprovements in Metal Rods; and I do hereby declare the following to bea full,clear, and exact description of the invention, such as willenable others skilled in the artto which it pertains to make and use thesame.

My invention relates to metal rods, the object being to provide a metalrod with a continuous longitudinal groove by drawing a blank of peculiarconstruction through a former.

The invention consists in forming a grooved metal rod by drawing asemi-elliptical blank through a suitable former, as hereinafterdescribed.

In the drawings,Figure I represents, partly in elevation and partly insection, an apparatus for forming the rod. Fig. 2 is a view of theformer detached, and Fig. 3 illustrates the blank and partially-formedrod. Fig. 4t shows a cross-section ofthe blank.

A represents a former consisting of a Inetallie plate having a roundopening, B, into which projects a lug, O.

rIhe former A may be combined with any suitable drawing apparatus, thatshown in Fig. l being an ordinary wiredrawing machine, and forming nopart of my invention.

D represents a blank which is semi-elliptical in cross-section. rIheedges of the blank are bent toward each other by drawing the blankthrough the former A, thus forming the groove E throughout the length ofthe rod.

The grooved rod thus formed is adapted for a variety of purposes. Idesign to employ it as a frame for street-lamp signs, the groove servingto hold the letters of the sign but I do not limit myself to anyparticular application of the rod thus described, as it will be foundadapted for a 'number of purposes.

Vhat I claim is- The method herein described of forming a drawn groovedrod consisting in drawing a blank semi-elliptical in cross-sectionthrough a former to bend up the edges of said blank to form the groove,substantially as set forth.

In testimony whereof I have signed this specification in the presence oftwo subscribing witnesses.

WILLIAM A. MGOOOL.

Vitnesses:

WILLIAM P. SMITH, F. O. MCCLEARY.

